Everyone who uses the default/"built-in version" of BOINC that came with Ubuntu 12.04 is having the same problems {process exited with code 193 (0xc1, -63)}.

See the following threads for some insight and I would also suggest you bookmark and/or subscribe to them to keep abreast of what is happening and when a work-around or solution is found:

Ubuntu Update Manager update to 7.0.24 today caused many errors
https://boinc.berkeley.edu/dev/forum_thread.php?id=7463

Boinc 7.0.24/Ubuntu computation errors
http://setiathome.berkeley.edu/forum_thread.php?id=67864

ReportingBugs - Community Ubuntu Documentation
https://help.ubuntu.com/community/ReportingBugs

Bugs : boinc in Ubuntu : “boinc” package : Ubuntu
https://launchpad.net/ubuntu/+source/boinc/+bugs


Hope this helps.

Thanks. I just noticed all of my SIMAP WU's were immediately failing.

Read how to fix this problem by reading post# 1229806 in thread "Message boards: Number crunching: Boinc 7.0.24/Ubuntu computation errors" over at SETI@home

http://setiathome.berkeley.edu/forum_thread.php?id=67864&nowrap=true#1229806